Press



Jufie 1,1926. I 1,586,847

@- SCHLAUPITZ PRESS Filed May 5. 1924 3 Sheets-Sheet 1 3 Q 660 192 ion/1e36,

June 1 1926. 1,586,847

' O. SCHLAUPITZ 7 PRESS Filed May 5, 1924 3 Sheets-Sheet 2 June 1 1926.

o. SCHLAUPITZ PRESS Filed May 5, 1924 3 Sheets-Sheet 5 A55 .95 Zorn/e56 Patented June 1, 1926.

UNITED STATES PATENT OFFICE.

OSWAILD SCHLAUIITZ, 0F CANTON, OHIO, ASSIGNOR TO THE TIMKEN ROLLER BEAR- ING.GO1VIP.A1\TY, 0F CANTON, OHIO, A CORPORATION OF OHIO. I

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Application filed as a,

My invention relates to presses, particularly those adapted to punch roll pockets in the cages of roller bearings and the like; and it has for its principal objects a press in which the punches are easily stripped from the work, in which the stroke of the punches is limited and which is simple in construc tion and easily operated. The invention consists in the mounting member for securing the punches in position, and in the device for stripping the punches from the work. The invention further consists in the press and in the parts and combinations of parts hereinafter described and claimed.

In the accompanying drawings, which form part of this specification and wherein like reference characters indicate like parts in the several views,

Fig. 1 is an elevation of a press embodying my invention, a portion of the table on which the press is mounted being shown in section,

Fig. 2is a vertical sectional view on the line 2-2 in Fig. 1, V

Fig. 8 is a bottom plan view of a punch carrying mechanism looking in the view indicated by the arrows 3-?) in Fig. 1.

Fig. 4 is a top plan View of the die mechanism as indicated by the line 4- 1 in Fig. 1,

Fig. 5 is a fragmentary vertical sectional view similar to Fig. 2, but on an enlarged scale, showing the punches withdrawn from the work after a cage has been punched,

Fig. 6 is a fragmentary vertical sectional View showing punches adapted for wing ing the bridges of a perforated cage, a loeating pin being provided for positioning the cage, and,

Fig. 7 is a fragmentary sectional View through part of a cage being winged showing the punches operating on the bridges of the cage and the locating pin forced back by a punch engaging it.

The invention is a press in which a circular series of punches 1 is moved endwise into a cage 2 that is mounted in a die 3 and then the punches 1 are forced outwardly by a mandrel 4 disposed centrally thereof, the punches thus punching holes in the cage. In the drawing a roller bearing cage is shown, and the holes on the pockets for the rolls of the bearing.

Mounted in a vertically movable carrier 1924. SeriaI No. 710,948.

5 of a press is a ram 6 that is provided with a recess in the bottom thereof in which is mounted a depending mandrel 4. The mandrel 4 is secured in position by means of a bolt 7 and nut 8. Secured to the ram 6, as by being pressed thereon, is a plate 9 that is provided with a circular series of recesses in which are disposed springs 10. Slidably mounted on the ram and mandrel is a head 11 on the upper end of which is threaded a ring 12 against which the ends of said springs 10 abut. Thus the head 11 is normally forced downwardly, away from the spring plate 9. The mandrel is provided with an oil groove 13. i

Pivotally secured to the head 11 by hereinafter described means are the punches '1 whose lower ends 14 are adapted to punch holes in the work. p

Mounted on a suitable table or base 15 and secured thereto by clamps 16 screwed to the table is a die support 17 in which is mounted the die 3 that is adapted to receive the blank 2 in which holes are to be punched, as the blank for a roller bearing cage. The die 3 has upwardly extending arms 18 constituting the side walls of pockets and a second die 19 rests on the upper ends of said arms,

the upper die constituting the tops of the pockets. A ring 20 is provided for positioning said top die, said ring being screwed to the die support 17.

The head 11 isprovided with a plurality of slots 21 therein, in each of which is disposed a punch 1. The head is provided with a plurality of lugs 22 that may be integral therewith or secured thereto as by pins 23 and screws 24. To each of the lugs 22 a punch 1 is pivotally secured as by a pin 25.

Secured to the lower end of the head 11 is The mandrele has a-tapered lower end' portion 30 adapted to spread apart the lower ends of the punches 1, thus forcing them radially outward to engage and perforate the cage blank. Each punch 1 is provided with a lug 31 that is adapted to abut against 'the ring 20 on the die support 17 to limit the stroke of the punch.

Secured to the spring plate 9 as by nuts 32 and bolts 33 and spaced therefrom as by a tubular member 34 is a ring 35 from which project slanting fingers 36. Each finger 3G is in alinement with a punch 1 and extends into the recess in which the punch is mounted.

Threaded into the'base member of the die 3 is a downwardly projecting rod 37 which slides in a guide sleeve 38. On the lower end of said rod 37 and secured thereto as by a screw 39 is a collar 40. A spring 41 is mounted between the collar 40 and the guide sleeve 38 and tends to keep said base member of the die 3 in its lowermost position, so that a blank 2 resting thereon is in proper position in the die to be punched. Rods 42 projecting downwardly from the movable member of the press have a cross rod 43 secured thereto that is adapted to abut against the lower end of said rod to move it and the base member of the die upwardly to strip the work from the die after it has been punched.

The operation of the press is as follows: Vith the parts in the position shown in Fig. 1, a blank 2 is placed in position in the die 3. The press is then tripped and the head 11 descends. A very slight movement of the press causes the cross rod 43 to be lowered away from the die lifting rod 37; and the spring 41 causes the base member of the die 3 to descend, thus leaving the blank in proper position in the die.

The further descent of the head 11 carries the lower ends 14 of the punches 1 into the cage blank 2 and the parts are properly alined by reason 01": the pin 28 on the die support extending into therecess 29 pro vided therefor in the centering ring 26 of the head 11, the conical depression 27 in said centering ring of the head fitting over the conical ring 20 on the die support 17 and the base 44 of the centering ring abutting against said ring on said die support.

lVhen the centering ring 26 abuts against the ring 20 on the die support, further downward movement of the head 11 is prevented, movement of the mandrel 4 being permitted by the compression of the springs 10. As the mandrel 4 continues its clownward movement, the conical end 30 thereof engages the lower ends 14 of the punches 1, forcing said punches outwardly and causing them to engage the work. The movement of the punches 1 is stopped by the lugs 31 there oncontacting with the ring 20; In case of any slight misalinement of parts which would normally cause certain punches to travel too far and other punches to fall short of punching the work, the lugs "and ring force the punches to operate properly. The punches that would otherwise overtravel are stopped and these punches form reaction members and the other punches are caused to make the proper stroke.

It will be noted that the stripper ring 35 and fingers 36 travel downwardly with the mandrel and carrier ring, and these do not interfere with the stroke of the punches.

The mandrel 4 and stripper ring 35 then begin to travel upwardly, the head 11 being held in downward position by the pressure of the springs 10 on the head ring 12. The

upward movement of the stripper ring 35 causes the stripper fingers 36 -to engage the punches 1 and withdraw them from the cage blank. Further upward movement of the mandrel 4 carries with it the head 11 and punches 1, thus withdrawing the punches entirely from the work. At the end of the upward movement, the cross rod 43 engages the die litter rod 37, thus raising the base member of the die 3 and stripping the cage from the die so that it may be easily removed by the operator.

In Fig. 6 is shown a construction in which the punches 51 are shaping punches that are adapted towing the bridges 52 of a perforated cage 53, that is break down or bevel off the corners thereof to adapt them to cooperate with the rolls of a roller bearing. The punches 51 have shoulders 54 adapted to strike the edges of adjoining bridges 52 and break them down. In other respects the construction of the punches, as of the operating mechanism therefor, is the same as herei'nbet'ore described.

In order properly to locate the punched cage relative to the punches, a locating pin is mounted in asuitable recess extending through the die and die support and having an end 56 that fits closely in a. pocket of the cage 53 to hold the cage in position. A spring 57 is mounted in said recess to force the pin toward the die and into a pocket of the cage.

The hereindescribed press has numerous advantages. The punches are accurately alined and are held to their work, the stroke of each punch being accurately fixed. The punches are easily and accurately stripped from the work.

Obviously numerous changes might be made without departing from the invention and I do not wish to be limited to the precise construction shown.

What I claim is:

1. In a press comprising a die, a reciprocable head, punches pivotally mounted in said head, and a mandrel slidable in said head for operating said punches,'stripper mechanism for said punches comprising a plurality of reciprocable fingers each in alinement with one of said punches and inclined toward said punch, whereby the uplOO ward movement of said fingers causes them to engage the punches and swing them clear of the work.

2. In a press comprising a die, a reciprocable head, punches pivotally mounted in said head, and a mandrel slidable in said head for operating said punches, stripper mechanism for said punches comprising a stripper ring provided with fingers each in alinement with one of said punches and inclined toward said punch, whereby the upward movement of said stripper ring causes said stripper fingers to engage the punches and swing them clear of the work.

3. A reciprocable arrier, a mandrel mounted in said carrier, a head slidably mounted on said mandrel, springs interposed between the ends otsaid head and said carrier, said head being provided with longitudinal slots; a plurality of punches pivotally supported by said head and each disposed in one of said slots, a stripper ring supported by said carrier, stripper fingers on said ring, each of said fingers being in alinement with one of said punches and inclined towards it, and a die for supporting the work to be punched, said die having a portion adapted to stop the downward move ment of the said punch supporting head before the downward movement of the carrier has stopped.

i. A reciprocable carrier, a mandrel mounted in said carrier, a head slidably mounted on said mandrel, a ring threaded onto the top of said head, said carrier being provided with recess-es, springs in said recesses bearing against said ring, and punches carried by said head. I

5. A reciprocable carrier, a mandrel mounted in said carrier, a head slidably mounted on said mandrel, a ring threaded onto the top of said head, said carrier being provided with recesses, springs in said recesses hearing against said ring, lugs projecting from said head, said head having slots extending lengthwise thereof, a punch secured to each of said lugs and disposed in one of said slots, said mandrel having a conical end portion adapted to spread said punches apart.

6. A reciprocable carrier, a mandrel mounted in said carrier, a head slidably mounted on said mandrel, lugs projecting from said head, said head having slots extending lengthwise thereof, a punch secured to each of said lugs and disposed in one 01 said slots, Said mandrel having a conical end portion adapted to spread said punches apart.

7. A press comprising a reciprocable head, a circular series of punches carried by said head, a die adapted to receive the Work, a top ring for said die, and a mandrel for swinging said punches radially, each of said punches having a lug adapted to strike said top ringot said die to limit the stroke of said punch as, and for the purposes set forth.

8. A press comprising a head, a series of punches carried thereby, a centering ring mounted on the end of said head, said centering ring being provided with a conical seat, and a die for supporting the work, said die having a top ring whose peripheral portion is otconical shape to tit said conical seat in said centering ring, and whose upper surface is flat and adapted to constitute an abutment for said centering ring.

Signed at Canton, Ohio, this 29th day of April, 1924.

OSWALD SCHLAUPI'TZ. 

